Merge pull request #212 from browngraphicslab/small_fix_0716

fixed undo on panning

2 files changed, 4 insertions, 2 deletions

diff --git a/src/client/views/pdf/Annotation.tsx b/src/client/views/pdf/Annotation.tsx
index 104241237..ed7081b1d 100644
--- a/src/client/views/pdf/Annotation.tsx
+++ b/src/client/views/pdf/Annotation.tsx
@@ -75,7 +75,7 @@ class RegionAnnotation extends React.Component<IRegionAnnotationProps> {
             () => this.props.parent.Index,
             () => {
                 if (this.props.parent.Index === this.props.index) {
-                    this.props.parent.scrollTo(this.props.y * scale - (NumCast(this.props.parent.props.parent.Document.pdfHeight) / 2));
+                    this.props.parent.scrollTo(this.props.y * scale);
                 }
             }
         );
diff --git a/src/client/views/pdf/PDFViewer.tsx b/src/client/views/pdf/PDFViewer.tsx
index 1e29863d9..699a1ffd7 100644
--- a/src/client/views/pdf/PDFViewer.tsx
+++ b/src/client/views/pdf/PDFViewer.tsx
@@ -192,7 +192,9 @@ export class Viewer extends React.Component<IViewerProps> {
     }
 
     scrollTo(y: number) {
-        this.props.parent.scrollTo(y);
+        if (this.props.mainCont.current) {
+            this.props.parent.scrollTo(y - this.props.mainCont.current.clientHeight);
+        }
     }
 
     @action